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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e36291ccfcaf255f84b5d8ceff5efdc6f2e9020f9e691254b4f2935f8701bdff' 
  AND token = '1oF9M8Xz0uBV2+hr2rtqaa/IfjokZK6lW2/ZVfCGKag=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}